Grate fire-place



J. IVI. COOK. GRATB FIRE PLAGE.

N8. 247,485. .A Patented sept. 27,1881.

P` (No Model.)

u M L'AL' UNITED STATES v PATENT OFFICE.

JOHN M. COOK, OF CINCINNATI, OHIO.

vGRATE FIRE-PLACE.

SPECIFICATION forming part of Letters Patent No. 247,485, dated September 27, 1881,

Application filed December 31, 1880. (No model.)

v of Cincinnati, Ohio, have invented certain new and useful Improvements in Grate Fire-Places, of which the following is a specification.

The object of my invention is to cconomize fuel and radiate into the room the heat usually absorbed by the walls of the fire-place or carried up the flue by means of a device which can be cheaply made, will occupy but little space in the room, and will present the neat and cheerful appearance of the ordinary grate tire-place. These objects are accomplished by the means illustrated in the laccompanying drawings, in which- Figure lis a front elevation of my improved grate lireplace. Fig. 2 is a transverse horizontal sectional plan taken above the grate or dre-basket iu line :v x of Fig. 1, and Fig. 3 is a central vertical transverse section.

Referring to the parts, which are indicated by identical letters throughout the various` views, A is a sheet-metal plate of a size to cover the customary grate-opening in the chimney and rest against the wall surrounding the Opeli- Ing.

The fire-hack B is a segment ot a corrugated dome-shaped shell, lnade preferably of castiron. It has a thimble, b, which projects from its back through plate A, to receive a pipe which extends into the liue, and the customary lugs are cast upon it to support the grate C. The fire-back is held in place by a perforated molded frame, D, the inner front portion of which rests against the front edge of the fireback B. The purpose of the perforations in frame D is to provide for the admission of air through the lower ones, and permit of its escape into the room through the upper ones after it has been heated. The front D and plate A extending from the end bars.

are secured together at their outer edges, firmly holding the firebox between them.

The grate C is supported upon the lugs cast upon the inside ofthe fire-back by journal-pins One of these journals extends through the back B and front D, and has a square or angular end to receive a key or wrench,by which the grate maybe shaken or tilted to free it of ashes.

\Vithin the pipe or curved thimble b is a damper, E, which is actuated by a rod, c, which extends throughthe front D, and has a knob or handle upon its outer end, by which the damper may he turned to regulate the draft.

VMy improved grate fireplace is secured in front ofthe ordinary fire-place opening bythe back plate, A, being held firmly against the wall. The back may have around its outer edges inwardly-projecting flanges to retain a lining of asbestus or other non-conducting material, so as to insure a more perfect radiation ofthe heat given off by the lire-back into the room.

I claimv A lire-place grae adapted to be set on the hearth in front of and covering the opening of an ordinary fire-place, constructed substantially as before set forth-that is to say, of a back plate, a grated tire-box adjacent thereto, and provided with a smoke flue projecting through an opening in said back plate, and a tire-boxinclosing and retaining frame, which forms an ornamental front, and is perforated to allow thc heat radiated from the rear of the re'hox to enter the room.

JOHN MALCOLM COOK.

Witnesses:

GEO. J. MURRAY, M. W. OLIVER. 

